The Cassini Spacecraft swooped in for the last of five close encounters with one of the most beautiful moons in our solar system: Dione. After more than a decade exploring the Saturn system, the Cassini-Huygens mission must be regarded as one of the most successful science missions ever. It has already amassed one of the greatest photographic collections of all time. Revel in the details of Dione out near the limits of the solar system.